Lakewood police have arrested a 40-year-old man in the Friday slaying of his 65-year-old mother and are holding him for investigation of first degree murder.

Bernice Medina was identified Saturday morning as the victim, according to a news release by Lakewood police spokesman Steven C. Hipwell.

Police arrested Timothy John Baca at about 9 p.m. Friday night at a home on the 1300 block of Everett Court, according to the news release. He lived in the home with his mother, Hipwell said.

Police have not yet indicated a motive.

Baca has a long history of arrests for violence and obstructing police, according to Colorado Bureau of Investigation records.

He was first arrested for assault on Oct. 17, 1993 in Denver.

Baca was arrested for menacing with a deadly weapon in 1999; public fighting in May of 2002; domestic violence on New Year’s Eve 2002; assault in February of 2003; obstruction of police and assault on St. Patrick’s Day 2003; assault and resisting arrest in August of 2003; assault in March of 2004; assault in November of 2004 and assault and obstructing police in May of 2007.

There is no record of him serving a significant sentence at a state prison.

He did spend 228 days in a county jail in 2008 after he was convicted of menacing and recklessly causing injury. On Dec. 8 he was charged with second degree assault, causing serious bodily injury. That charge was dismissed last week, according to CBI records.

Kirk Mitchell is a general assignment reporter at The Denver Post who focuses on criminal justice stories. He began working at the newspaper in 1998, after writing for newspapers in Mesa, Ariz., and Twin Falls, Idaho, and The Associated Press in Salt Lake City. Mitchell first started writing the Cold Case blog in Fall 2007, in part because Colorado has more than 1,400 unsolved homicides.

The owners of Boulder’s Sterling University Peaks apartments, who this summer were cited for illegally subdividing 92 bedrooms in the complex, have reached an agreement to settle the case for $410,000, the city announced Thursday.